EP2010805A1 - Systeme d'etancheite - Google Patents

Systeme d'etancheite

Info

Publication number
EP2010805A1
EP2010805A1 EP07728161A EP07728161A EP2010805A1 EP 2010805 A1 EP2010805 A1 EP 2010805A1 EP 07728161 A EP07728161 A EP 07728161A EP 07728161 A EP07728161 A EP 07728161A EP 2010805 A1 EP2010805 A1 EP 2010805A1
Authority
EP
European Patent Office
Prior art keywords
sealing
thermoplastic
attachment portion
sealing system
arrangement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP07728161A
Other languages
German (de)
English (en)
Other versions
EP2010805B1 (fr
Inventor
Silvain Meessen
Jean-Pierre Mayeres
Denis Job
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NMC SA
Original Assignee
NMC SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NMC SA filed Critical NMC SA
Priority to PL07728161T priority Critical patent/PL2010805T3/pl
Priority to SI200731321T priority patent/SI2010805T1/sl
Priority to EP07728161.6A priority patent/EP2010805B1/fr
Publication of EP2010805A1 publication Critical patent/EP2010805A1/fr
Application granted granted Critical
Publication of EP2010805B1 publication Critical patent/EP2010805B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
    • F16J15/104—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J10/00—Sealing arrangements
    • B60J10/15—Sealing arrangements characterised by the material
    • B60J10/16—Sealing arrangements characterised by the material consisting of two or more plastic materials having different physical or chemical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J10/00—Sealing arrangements
    • B60J10/50—Sealing arrangements characterised by means for prevention or reduction of noise, e.g. of rattling or vibration of windows
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/061—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with positioning means

Definitions

  • the present invention generally relates to sealings or gaskets, in particular to sealing systems used to create a tight yet non permanent connection between two or more surfaces of different objects.
  • seals and gaskets for non permanent, i.e. intermittent use are generally made up of a sealing portion and attachment portion, wherein the sealing portion generally represents a strip or longitudinal profile of a flexible material and the attachment portion is applied thereto to ensure that the sealing arrangement will adhere to one of the surfaces (called base surface) and perform its sealing function when brought into contact with the second surface (called opposing surface).
  • the attachment portion used to secure the sealing arrangement to the base surface is generally made of more rigid materials.
  • the joining of both portions of the composite sealing arrangement may be effected concomitantly during extrusion (co-extrusion) or by any appropriate subsequent step (post- extrusion, gluing, welding, ).
  • an additional securing arrangement which will be removably attached to the sealing arrangement, but permanently fixed to the base surface, thereby allowing the replacement of the sealing if needed.
  • This additional securing arrangement may comprise several distinct parts to be attached on discrete locations of the base surface or preferably only one longitudinal profile.
  • the attachment to the composite sealing arrangement may be effected through a detachable engagement e.g. via an appropriate geometrical configuration, generally complementary to that of the additional securing arrangement, thus allowing to (removably) clip them together.
  • the elastic portion of the composite sealing commonly comprises a hollow section made of synthetic material, such as EPDM rubber, silicone rubber, etc.
  • the hollow configuration allows for a partial collapse of the sealing when contacting the surfaces thereby creating an intimate contact with the opposing surface.
  • Weather stripping is a typical application of the above-mentioned gasket arrangements for sealing a pair of surfaces.
  • weather stripping which is especially adapted for use on motor vehicles to seal the openings around doors, hood and trunk usually consists of tubular covers made of a soft material such as rubber with a hollow cross section, and attachment means adapted to secure the rubber to the door, hood or trunk of the car.
  • sealing is at least partially exposed to adverse climatic conditions, such as for automobile body parts.
  • adverse climatic conditions such as for automobile body parts.
  • a major problem in such outdoor applications is that due to ambient moisture and low temperatures the sealing may freeze to the adjacent surfaces and hence be damaged or even torn off in case the opposing surface is separated by force from the sealing, e.g. when forcibly pulling open the door of a car.
  • foams in general have superior acoustic and thermal insulation properties due to their cellular structure. Foams are therefore largely used for all kinds of thermal and acoustic insulation applications, even for different kinds of sealings.
  • the major disadvantage of foams in general is their relatively poor internal strength or cohesion, which cannot resist the forces that may arise in the case mentioned above.
  • the present invention proposes a sealing system for use as sealing between one base surface and at least one opposing surface, comprising a. a composite sealing arrangement having a sealing portion and an attachment portion, and b. a securing arrangement to be fixed to the base surface, wherein the attachment portion comprises means to detachably engage with the securing arrangement, wherein the sealing portion is made of a thermoplastic foam material and wherein the attachment portion is made of a composite material.
  • a surface in the sense of the present invention not only comprises larger areas, but also borders, edges, rims, corners, etc.
  • thermoplastic foam material may be used for outdoor applications even under adverse climatic conditions, because, although their internal cohesion is far less than the significant forces applying when forcibly tearing off the surface frozen to a wet rubber sealing, these huge forces do simply not arise when using thermoplastic foam based sealing system according to the invention.
  • thermoplastic foams are surprisingly less prone to attachment due to freezing than rubber type sealings.
  • a further advantage of the present sealing systems in addition to their attractive insulation characteristics is a significant reduction in weight, which is of particular interest in the automotive industry.
  • thermoplastic materials are less expensive than rubber type materials and their processing is generally easier, well known and controlled by the persons skilled in the art.
  • An additional benefit is the lack of maintenance operations required during the overall lifetime of the sealing system, as compared to rubber type gaskets which should be regularly treated e.g. with silicone oil to preserve their surface.
  • the sealing system is generally composed of two parts: first, a composite sealing arrangement effecting the sealing function and second, a securing arrangement which is fixed to one of the surfaces, called base surface, and which further serves to removably engage with the attachment portion of the composite sealing arrangement, thereby allowing the removal of the sealing arrangement, e.g. for replacement in case of damage.
  • the first part i.e. the composite sealing arrangement, comprises a sealing portion and an attachment portion.
  • the sealing portion is made of thermoplastic foam material, preferably comprising olefinic polymers and/or copolymers. Polymers and copolymers of ethylene and/or propylene are especially preferred.
  • Foams as those usable in the present invention at least during manufacturing further comprise one or more blowing agents, which may be physical blowing agents, such as gazes (alcanes, such as isobutane, etc.) added during extrusion, or chemical blowing agents freed by activation, such as azodicarbonamide, citric acid/sodium hydrogen carbonate, trihydrazinotriazine, etc.
  • blowing agents which may be physical blowing agents, such as gazes (alcanes, such as isobutane, etc.) added during extrusion, or chemical blowing agents freed by activation, such as azodicarbonamide, citric acid/sodium hydrogen carbonate, trihydrazinotriazine, etc.
  • the attachment portion is a particular portion of the sealing arrangement in that its function is to permit the detachable engagement to the second part of the system. Hence, due to the different requirements in term of rigidity, this portion is made of a composite material.
  • composite material is to be understood as comprising either one major polymeric constituent having at least two different formulations, e.g. with and without blowing agent, or at least two chemically different major polymeric constituents.
  • the composite material preferably comprises a thermoplastic foam material and a different further thermoplastic material, in which case this different further thermoplastic material may also be (partially) foamed, but it should be sufficiently firm in view of its attachment function.
  • the further thermoplastic material although different, preferably comprises compatible thermoplastic polymers, such as related olefinic polymers and/or copolymers, such as polymers and/or copolymers of ethylene and/or propylene.
  • compatible thermoplastic polymers such as related olefinic polymers and/or copolymers, such as polymers and/or copolymers of ethylene and/or propylene.
  • the composite material of the attachment portion comprises a cross-linked thermoplastic polymer and/or copolymer.
  • the composite material should have a rigidity, measured as the elastic modulus, which is at least 50%, preferably at least 100% and most preferably at least 200% higher than that of the thermoplastic foam material used for sealing portion.
  • the composite material has a density which is at least 25%, preferably at least 100% and most preferably at least 200% higher than that of the thermoplastic foam material.
  • thermoplastic foam material is a substantially closed-cell foam, or substantially open-cell foam which results in optimum performances depending on desired final properties like acoustical absorption, thermal insulation, flexibility.
  • the sealing portion has a solid cross- section, i.e. no other void then the foam cells themselves.
  • the lack of hollow structure greatly facilitates the manufacture of such seals.
  • a particularly advantageous aspect of the invention is the detachable engagement of the two parts of the system, which may be accomplished by any appropriate means known by the skilled person.
  • the detachably engaging means comprise a clip-on type arrangement wherein the securing arrangement and the attachment portion form a male-female type connection or coupling through complementary cross-sections.
  • the securing arrangement may be made of any appropriate thermoplastic material, e.g. such as those used for the sealing arrangement, but generally it will not be foamed as it should be sufficiently rigid to permit a strong, yet detachable connection with the attachment portion of the sealing arrangement.
  • the materials constituting the sealing system as presented above often require further ingredients known in the art.
  • the material of the sealing portion and/or of the attachment portion further independently comprise, as needed, one or more additives, such as pigments, stabilisers, antioxidants, anti-UV agents, lubricants, cell regulators and/or flame retardants.
  • a further aspect of the invention is the use of the present sealing systems for outdoor applications, whereby the term outdoor applications is meant to also include applications not strictly taking place outdoors but implying adverse ambient conditions, such as in cooling or refrigerating devices or plants, ventilation and air-conditioning installations, laboratory air-locks, etc.
  • the invention pertains to the use of such sealing systems in the automotive industry, especially for use on automobile body parts, such as doors, hood and/or trunk.
  • the invention provides for a process for manufacturing a composite sealing arrangement as described herein, comprising the extrusion of the sealing portion, the extrusion of the attachment portion and the joining of both portions into one composite sealing arrangement.
  • sealing and attachment portions may be effected by any appropriate method known in the art, but preferably by co-extrusion in one single step.
  • the joining of both sealing and attachment portions is effected by any appropriate method after extrusion thereof, such as post-extrusion, gluing, thermal or sonic welding, etc.
  • the process comprises a further step, wherein the sealing portion and/or the attachment portion is (are) cross-linked during or after extrusion.
  • a further aspect of the invention pertains to a connector system for removably connecting a shaped foam article on a surface, comprising a. a shaped foam article having a shaped foam portion and an attachment portion, and b. a securing arrangement to be fixed to the surface, wherein the attachment portion comprises means to detachably engage with the securing arrangement, wherein the shaped foam portion is made of a thermoplastic foam material and wherein the attachment portion is made of a composite material.
  • connection system The materials used for the connector system are the same as those mentioned for the respective part in relation with the sealing system, except that the initial requirements for such a system may be totally different from those a sealing system must meet. Hence, variations of the above may be seen by the skilled person without departing from the present invention. [0040] The field of use of such connector systems is quite large, as such a system allows for an easy attachment of decorative articles, etc.
  • Fig. 1 represents an embodiment according to a preferred aspect of the invention, wherein Fig.1 a) is a cross sectional view and Fig.1 b) is a plan view of a first sealing system (1 );
  • Fig. 2 shows an alternative embodiment according to a preferred aspect of the invention, wherein Fig.2 a) is a cross sectional view and Fig.2 b) is a plan view of a second sealing system (1 ).
  • a sealing system 1 comprising a sealing arrangement 21 +22 removably attached by a clip-on type connection to a securing arrangement 10 to be fixed on a base surface (not represented).
  • securing arrangement 10 represents a female type connector
  • Fig. 2 this securing arrangement is conceived as a male type connector
  • the sealing arrangement is composed of two portions: the sealing portion 21 generally representing the major portion (uppermost portion in Fig. 1 ) and the attachment portion 22 (lower portion in Fig. 1 ) having means to detachably engage with the securing arrangement 10.
  • the material making up the attachment portion is a composite material, which may be manufactured by co-extrusion or separate extrusion followed e.g. by a welding or gluing step.
  • the aim of the composite material is to render at least those parts of the attachment portion 22 which will be in more or less direct contact with the securing arrangement 10 more rigid or firm.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Material Composition (AREA)
  • Seal Device For Vehicle (AREA)
  • Laminated Bodies (AREA)
  • Gasket Seals (AREA)

Abstract

L'invention concerne un système d'étanchéité (l) destiné à être utilisé comme scellement étanche entre une surface de base et au moins une surface en opposition, comprenant un arrangement d'étanchéité composite ayant une partie de scellement étanche (21) et une partie d'attache (22) ainsi qu'un arrangement de fixation (10) à attacher à la surface de base, la partie d'attache comprenant des moyens pour s'engager de façon amovible à l'arrangement de fixation, la partie de scellement étanche étant faite d'une matière en mousse thermoplastique et la partie d'attache étant faite d'une matière composite.
EP07728161.6A 2006-04-21 2007-04-17 Système d'étanchéité Active EP2010805B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PL07728161T PL2010805T3 (pl) 2006-04-21 2007-04-17 System uszczelniający
SI200731321T SI2010805T1 (sl) 2006-04-21 2007-04-17 Tesnilni sistem
EP07728161.6A EP2010805B1 (fr) 2006-04-21 2007-04-17 Système d'étanchéité

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP06112930A EP1847735A1 (fr) 2006-04-21 2006-04-21 Système d'étanchéité
EP07728161.6A EP2010805B1 (fr) 2006-04-21 2007-04-17 Système d'étanchéité
PCT/EP2007/053696 WO2007122134A1 (fr) 2006-04-21 2007-04-17 Système d'étanchéité

Publications (2)

Publication Number Publication Date
EP2010805A1 true EP2010805A1 (fr) 2009-01-07
EP2010805B1 EP2010805B1 (fr) 2013-06-26

Family

ID=37033683

Family Applications (2)

Application Number Title Priority Date Filing Date
EP06112930A Withdrawn EP1847735A1 (fr) 2006-04-21 2006-04-21 Système d'étanchéité
EP07728161.6A Active EP2010805B1 (fr) 2006-04-21 2007-04-17 Système d'étanchéité

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP06112930A Withdrawn EP1847735A1 (fr) 2006-04-21 2006-04-21 Système d'étanchéité

Country Status (7)

Country Link
EP (2) EP1847735A1 (fr)
DK (1) DK2010805T3 (fr)
ES (1) ES2428156T3 (fr)
PL (1) PL2010805T3 (fr)
RU (1) RU2439405C2 (fr)
SI (1) SI2010805T1 (fr)
WO (1) WO2007122134A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201010169D0 (en) 2010-06-17 2010-07-21 Rolls Royce Plc A seal
US20130067820A1 (en) * 2011-09-20 2013-03-21 Sherman Jett Weather seal retainer apparatus
US9517830B2 (en) * 2014-03-18 2016-12-13 The Boeing Company Seal design for vehicle and structure application

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3110938A (en) * 1960-11-25 1963-11-19 Gen Motors Corp Sealing strip
FR2699869B1 (fr) * 1992-12-30 1995-03-17 Hutchinson Elément profilé armé perfectionné.
IT1295247B1 (it) * 1997-09-30 1999-05-04 Ilpea Ind Spa Profilo per frigoriferi con base rigida deformabile
GB2358037B (en) * 1999-11-11 2003-11-12 Draftex Ind Ltd Sealing trimming glass-guiding or finishing strips
EP1136297A1 (fr) * 2000-03-21 2001-09-26 DIPRO Dichtungssysteme GmbH Joint d'étanchéité de vitrage

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007122134A1 *

Also Published As

Publication number Publication date
RU2439405C2 (ru) 2012-01-10
ES2428156T3 (es) 2013-11-06
RU2008145706A (ru) 2010-05-27
SI2010805T1 (sl) 2013-10-30
EP2010805B1 (fr) 2013-06-26
WO2007122134A1 (fr) 2007-11-01
DK2010805T3 (da) 2013-08-26
PL2010805T3 (pl) 2013-12-31
EP1847735A1 (fr) 2007-10-24

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